Puncture-proof tire.



J. C. FAIR & T. A. ANDERSON.

PUNCTURE PROOF TIRE.

APPLICATION FILED SEPT- 91 I914.

Patented Apr. 25, 1916.

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tosEria CLIFTON Fain AND THEODORE A. ANDERSON, OF CHICAGO,ILLINoIsessIeN- one, BY MEsNE ASSIGNMENTS, TO PREMIUM r No'rUaEPRoorTIRE COMPANY, a

CORPORfrJIITIlZOl\Tv OE MAINE.

enace.

- PUNCTURE-PROOF TIRE.

ramme a t. as, rain;

Application filed September 9, 191a, Serial No. 860,956.

To all whom it may concern:

Beit known that we, JOSEPH -C. FAIR and THEODORE A. ANDERSON, citizensof the United States, residing at Chicago, county of Cook,Statejoflllinois, have made a certain'new and useful Invention inPuncture- Proof -Tires, of which the f following is a specification. yThis invention relates to pneumatic tires and particularly totires ofthis class'which' are-puncture proof. p v

The object of the invention is to provide a puncture proof tire whichis'of simple structure,- economical to manufacture, light thetreadsurface of the shoe, the pad being in weight, efiicient and durablein use. 4

The lnvention consists substantially in the construction, combination,location and relative' arrangementof parts, all as will be more fullyhereinafter set forth, as shown in the accompanying drawing, and finallypointed out in the appended claim.

" Referring to the accompanying drawing:

' Figure 1'1S.21.'V18W 1n transverse section of a pneumatic punctureproof tire constructed in accordance with our invention. Fig. 2, is abroken view in longitudinal section through the tread of the tire, uponasomewhat enlarged scale, showing the structure of the tire. Fig. 3 is adetached broken detail view in plan showing a form of filler fabricsuitable for use'in' the construction of a tire in accordance withourinvention.

Fig. 4 is a similar line 4, l,'Fig. 3.

In carrying out our invention we propose to employas the principalpuncture proof element of the tire,

view .in section on the a ad composed of cotton or other fiber which hasbeen suitably and in either case after being impregnated hated-cottonfiber or other fiber'pad,and to with the rubber cement is compressedinto a crescent shaped pad to be interposed between the infiatableinner'tube and the outer shoe of the tires Such aninterposed pad, asconstructed, is capable of resisting the penetration the-rethrough ofnails, glass, tacks,'or the like. In order to supplement thepun'ctureresisting power of the impreginsure the production of-a' tire whichcannot be punctured-under ordinary conditlons, we

propose to interpose layers of suitable fabric with rubber cementbetween the layers, be-

tween .the pad and the inner tube, and also between the pad and theinner surface of the crescent shaped 'in transverse section, and idesigned to fit into the interior of an ordinary rubber .orothercomposition shoe 6,

extending throughout the circular length of the latter, the portion ofgreatest thickness of the pad lying opposite-and parallel to of taperingor decreasing thickness toward its edges from its transverse centralportion.

The pad 5, is composed of suitable loose fiber. We have foundthefiber ofSea Island cotton to be excellently suitable for the'pur 'pose. Thefiber may be employed en masse' or, if preferred, and'as shown in Figs.3 and l, the pad may be formed by loosely weaving or otherwise formingthe fiber into a fabric 11,. In either case the fibers are.

impregnated throughout their mass, by d1 ping or otherwise, with asolution 'of- 'ru her or other suitable cement and compressed, therebyrendering the pad resilient 'ut impervious to puncture.

By applying the rubber or other cement to the cotton fiber the body ofthe fiber when compressed into pad form is enabled to retain its shape,and also, in the use of the tire the fibers composing the pad arethereby prevented from creeping, shifting or becoming displacedrelativelyto each other. The use of the fabric form of pad serves thesame purpose.

A'sabove stated, and in order to insure, the puncture proofcharacteristic of the tire when completed, we interpose lay es ofsuitable fabric, between thepad 5 an the inner surface' .of the shoe,and also between thev pad and the inner tube 7. These fabric layers arerespectively-indicated at 8 and 9. We have found that closely wovencotton fabric will answer the desired purpose, and between adjacentlayers of this fabric as well as between the inner andouter surfaces ofthe pad'and the adjacent surfaces of the fabric layers, we interpo'serubber other cement, indicated at 10. In practice we ers 8, between thepad and the shoe andthree such layers 9, between the pad and the innertube. Between the extreme side edges of the pad and the extreme sideedges of the complete tire, the inner fabric layer 8, and the outerfabric layer 9, lap upon and are cemented to each other and lie the onein contact with the other, as clearly shown in Fig. 1, and consequentlythe pad is firmly and efficiently bound in and heldin place between thetwo sets of fabric layers, while at the same time the fabric layers lendstrengthto the tire bod-y, increase its pressure resistance and aidpreventing puncture penetration, thereby forming a most efficientreinforcement.

- It is obvious. that any ordinary or Well known rubber or compositionshoe 6 may be employed.

The elements above described are assembled to. completethe tirestructure. In assembling the various elements the fabric layers 8 arecemented together and vulcanized to the inner surface of the shoe 6.Thecompressed pad is then cemented to the inner surface of the outerlayer 8, and finall the fabric layers 9 are cemented together and to theouter surface of the pad, as shown, the extreme edges thereof lappingupon and being cemented to the inner surfaces of the layers 8, Thiscompletes the whole structure. The tire is then ready to receive theinner tube. v

It is obvious that changes in details and arrangement might readilyoccur to persons skilled in the art and still fall Within the spirit andscope of our invention as defined in the claim.

A tire constructed as described is not only rendered puncture proof butis light, strong,

shape, a plurality of layers of fabric form-.

ing theinner lining of said tire and a cementbinder to bind said padagainst the surface of the innermost fabric layer of said firstmentioned fabric layers and against the surface of the outermost fabriclayer of said last mentioned layers and to bind the outermost fabriclayer of said first mentioned layers to said shoe.

In testimony whereof we have hereunto set our hands in the presence ofthe subscribing witnesses, on this 25th day of August, A. D., 1914.

JOSEPH CLIFTON FAIR. THEODORE A. ANDERSON. Witnesses:

MARIE HYNES, ARTHUR GILLIS.

Copies of this patent may be obtained for five cents each, byafidressingthe Commissioner of Patents, 1 Washington, D. 43.

